Mason County, Washington: Industrial Catholic Metro county. In 2024, voted R+2%. Democratic peak: D+47 in 1936.
Key facts
- 2024 presidential margin
- R+2MIT Election Lab
- Political typology
- Industrial Catholic MetroAkashic typology
- Population
- 67,9822024 5-year
- Median household income
- $83,2702024 5-year
- White (non-Hispanic)
- 77.0%2024 5-year
- Black
- 1.0%2024 5-year
- Hispanic / Latino
- 12.8%2024 5-year
- Peak Democratic margin
- D+47 in 1936MIT Election Lab
- Peak Republican margin
- R+39 in 1924MIT Election Lab
- Most similar
- Rice County, MN · similarity 0.94
2024 results by precinct
2024 precinct map of Mason CountyPrecinct-level 2024 presidential results for Mason County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | +0.5% |
| 1896 | +25.1% |
| 1900 | −5.9% |
| 1904 | −33.2% |
| 1908 | −24.1% |
| 1912 | +4.6% |
| 1916 | +0.9% |
| 1920 | −34.5% |
| 1924 | −39.3% |
| 1928 | −27.2% |
| 1932 | +30.4% |
| 1936 | +47.1% |
| 1940 | +31.6% |
| 1944 | +26.0% |
| 1948 | +16.8% |
| 1952 | +0.0% |
| 1956 | −2.4% |
| 1960 | +6.1% |
| 1964 | +36.7% |
| 1968 | +13.3% |
| 1972 | −10.5% |
| 1976 | +11.5% |
| 1980 | −10.9% |
| 1984 | −9.0% |
| 1988 | +2.6% |
| 1992 | +11.7% |
| 1996 | +14.2% |
| 2000 | +2.8% |
| 2004 | +3.6% |
| 2008 | +8.7% |
| 2012 | +7.0% |
| 2016 | −5.8% |
| 2020 | −3.9% |
| 2024 | −2.5% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 17,215 | 18,127 | 36,689 | ||
| R | 17,269 | 18,710 | 37,303 | ||
| R | 11,993 | 13,677 | 29,003 | ||
| D | 14,764 | 12,761 | 28,489 | ||
| D | 15,050 | 12,600 | 28,306 | ||
| D | 12,894 | 11,987 | 25,394 | ||
| D | 10,876 | 10,257 | 22,480 | ||
| D | 10,088 | 7,149 | 20,750 | ||
| D | 8,076 | 5,776 | 19,626 | ||
| D | 7,826 | 7,426 | 15,545 | ||
| R | 7,007 | 8,410 | 15,650 | ||
| R | 5,241 | 6,745 | 13,737 | ||
| D | 6,060 | 4,758 | 11,291 | ||
| R | 3,907 | 4,873 | 9,177 | ||
| D | 4,540 | 3,397 | 8,590 | ||
| D | 5,514 | 2,549 | 8,071 | ||
| D | 4,183 | 3,703 | 7,902 | ||
| R | 3,840 | 4,026 | 7,886 | ||
| D | 3,830 | 3,827 | 7,700 | ||
| D | 3,613 | 2,524 | 6,501 | ||
| D | 3,379 | 1,976 | 5,397 | ||
| D | 3,465 | 1,775 | 5,346 | ||
| D | 3,087 | 1,015 | 4,398 | ||
| D | 2,181 | 995 | 3,902 | ||
| R | 992 | 1,745 | 2,772 | ||
| R | 179 | 902 | 1,840 | ||
| R | 383 | 997 | 1,779 | ||
| D | 779 | 764 | 1,724 | ||
| O | 522 | 439 | 1,798 | ||
| R | 318 | 553 | 977 | ||
| R | 315 | 661 | 1,041 | ||
| R | 455 | 514 | 1,000 | ||
| D | 667 | 397 | 1,077 | ||
| D | 356 | 352 | 838 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
17.2%
English
13.1%
Irish
11.7%
American
3.9%
Scottish
3.4%
Italian
3.3%
Polish
1.9%
African American
0.8%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 44.7 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$83,270
Mason County ranks in the top 25% of US counties.
Mason County$83,270
Washington$98,141
United States$80,734
Mason County ranks in the top 25% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
12.3%
Child poverty is below the national average.
Children under 1814.0%
Working age (18–64)12.0%
Seniors (65+)10.7%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
89.5%
speak English only
Spanish7.9%
Other Indo-European0.9%
Asian & Pacific Islander0.9%
Other languages0.8%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 73.5% of residents not counted as adherents by any reporting body.
Mason County's economy traces back to logging and shellfish aquaculture along Hood Canal, and its presidential margins have narrowed steadily over two decades, landing within 3 points in 2024 after voting more decisively Republican in earlier cycles.
Its margins are typically close. The Democratic margin reached forty-seven points in 1936; the Republican margin reached thirty-nine points in 1924. Between 2020 and 2024 the county moved one point toward the Democratic candidate; the 2024 margin was two points.
Its demographics sit near national norms: a 77% non-Hispanic-white share, a median household income of $83,270, and a 12% poverty rate. The county's voting pattern over the last decade is most similar to that of Rice County and Caroline County.
Most similar counties
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Mason County, Washington. Akashic. https://akashic.app/county/53045/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Mason County, Washington vote in 2024?
In 2024, Mason County, Washington voted Republican by 2.5 points (R+2), carried by the Republican candidate. Out of 36,689 votes cast, 17,215 went Democratic and 18,127 went Republican.
What is Mason County, Washington's political typology?
Akashic places Mason County, Washington in the "Industrial Catholic Metro" typology — Mid-size industrial metros with Catholic ethnic roots — among the most competitive, swing-prone ground in the country. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 20 times, Republican 13 times, and other 1 times.
When did Mason County, Washington last vote Democratic?
The most recent presidential election in which Mason County, Washington voted Democratic was 2012.
How many people live in Mason County, Washington?
Mason County, Washington has a population of 67,982 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Mason County, Washington?
Median household income in Mason County, Washington is $83,270 — above the national median of $80,734. The Washington state median is $98,141.
What is the political history of Mason County, Washington?
Akashic tracks 38 presidential elections in Mason County, Washington from 1876 to 2024. Of those, 20 went Democratic and 13 went Republican. The county's typology — "Industrial Catholic Metro" — captures where that record, its demographics, and its recent swing place it among American communities.